Spinning bucket



NW. W7 W31. P. E. HARRESQN SPINNING BUCKET Filed Jan. 10. 1950 wi d.

\ V NTQR TTQRNEW Patented Nov. 17, 1931 UNITED STATES PAUL E. HARRISON, OF BUFFALO, NEW YORK,

rm, NEW YORK, N. Y

ASSIGNOR 10 DU FONT RAYON COM- A CORPORATION OF DELAWARE SPINNING BUCKET Application filed January 10, 1930. Serial No. 419,785.

The invention relates to the manufacture of artificial silk and more particularly to a new and improved spinning bucket arrangement.

I In the manufacture of artificial silk, aplurality of filaments are formed by a spinneret and, after passing through a suitable coagulating solution, are subsequently twisted into a single thread. Concomitant with this twisting action, the thread is collected in the form ofa cake in a spinning bucket rotating at a fairly high speed. The invention accordingly provides a new and improved spinning system organized so as to attain a compact arrangement.

The invention further provides means for coupling the spinning bucket with associated driving means so as to effect a smooth and even rotation of said bucket with a resultant relief in excessive stresses and vibrations.

The invention still further provides a simple and effective system for lubricating var1- out rotating parts of said spinning arrangement. I a

According to a concrete exemplification of the present invention, the spinning bucket has connected therewith a deep hub in which is mounted suitable driving means. This driving means may take the form of an electric motor having an internal stator and an external rotor dielectrically associated therewith, said rotor being secured to the hub of the spinning bucket for imparting rotary movement thereto.

The invention also consists in certain new and original features of construction and combinations of parts hereinafter set forth and claimed.

Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to its objects and advantages, the mode ofits operation and the manner of its organization may be better understood by referring to the following description taken in connection with the accompanying drawing forming a part thereof, in which is shown a vertical section taken through the center of a bucket of a spinning arran ement constituting} an embodiment of the present invention. ike reference characters denote like parts in the drawing.

In the following description and in the claims, parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

Referring particularly to the accompanying drawing, there is shown a base plate 10 which is surmounted by a pedestal 11. Inter sed between said base plate 10 and said pe estal 11 is a gasket 12 which is made of cork or other yieldable material. Said base plate 10, pedestal 11 and gasket 12 are aper-- tured and so assembled as to conjointly define a passageway 13. A spindle 14 is rovlded having at one end thereof a threadedbngagement with said pedestal 11. The other end of the spindle 14 is provided with a counterbore 15 for the reception therein of a ball 16. This ball 16 cooperates in such a manner with a race 17 secured to a unit 18 as toprovide an end thrust ball-bearing engagement between said spindle 14 and said unit 18. 75

The unit- 18 comprises a rotatable bucket 20 which may be constructed of aluminum, bakelite, or any other acid resistant material. This bucket 20 as .shown in the drawing preferably has a bottom extending over the entire lower surface thereof and the'side wall is provided with a plurality of apertures 21. If desired, there may be positioned inside said bucket 20 a detachable cake shell 22 having a plurality of apertures 23 which are adapted to register with the apertures 21 of said bucket. The cake shell 22 ma be secured in place with respect to the buc et 20 throu h the agency of embossments 24 in said she I, said embossments fitting in corresponding channels in said bucket.

Integrally secured to the bucket 20 is a deep hub 25. Mounted inside said hub 25 is a-driving mechanism. One type of driving mechanism which can be used is a threephase induction motor, but' it is apparent that any other suitable ty e of motor can be used without departing 0m the spirit of the invention.

The driving mechanism comprises a stameans.

Dielectrically associated with said internal stator 26 is a revolving external armature 31 which is suitably connected to a sleeve member 32. This sleeve member 32 is secured to the hub 25 through the agency of keys 33 and is held in fixed position therewith by means of a set screw 34 passing through the hub 25 and impinging on the external surface of the sleeve member 32. One end of the sleeve member 32 has secured thereto an annular race member 35 which cooperates through the agency of a plurality of ballbearine's 36 with a companion race member 37 secured to the spindle 14. Connected proximate the other end of the sleeve member 32 is a sleeve 38 which carries an annular race member 40 similar to the race member 35. This race member 40 cooperates with a companion race member 41 through the interposition of a plurality of ball-bearings 42.

' Mounted adiacent the race member 41 is a collar 43 which has a threaded engagement with a portion of the spindle 14.

The spindle 14 is provided with a passageway 39 which terminates adjacent the stator 26. This passageway 39 is provided for the purpose of disposing therein the electric leads (not shown) for said stator. More specificv details of the motor arrangement have been eliminated for the sake of simplicity.

.The outer end of the sleeve member 32 is closed by an apertured disc 44 which is secured to said sleeve member 32 by means of screws 45. Interposed between said disc 44 and the end of the sleeve member 32 is an apertured gasket 46 which may be constructed of cork or any other yieldable material.

In order to provide the movable parts of said driving mechanism with a suitable lubrieating system, the spindle 14 has extending longitudinally therealong a passageway 47 which is connected by means of a conduit 48 to a suitable lubricant supply. Extending transversely from said passageway 47 is a by-pass 50 which diverts some of the lubricant towards the ball-bearings 42 and their associated race members 40 and 41. The lubricant also extends through the passageway 47 to the upper ballsbearing arrangements as indicated in the accompanying drawing.

Extending centrally of the spindle 14 is a passageway 51 which is connected to a conduit 52 constituting part of a lubricant return system. This passageway 51 terminates proximate one end of the spindle 14 and has radially extending therefrom passageways 53 and 54. The passageways 54 register with radially extending apertures 55 provided'in the collar 43. These passageways 53 and 54 serve as conduits for the return of the lubricant into the said passage 51, as indicated in the drawing.

In order to obviate the contamination of certain parts of the electrical system with lubricants, retaining rings 56 have been provided. These rings are fitted in an annular groove 57 in the spindle 14 and are constructed of suitable absorbent material, such as felt.

It should be noted that the present invention has provided a spinning bucket arrangement which is not only simple but also compact, resulting thereby in the relief of excessive vibrations. It should also be observed that another improvement afforded by the arrangement consists in the protection of the elements inside the hub a ainst the action of injurious chemicals. furthermore, it should be noted that the lubricating system is so enclosed in the hub of the spinning bucket as to obviate the possible contamination of the cake formed in said bucket with any lubricants.

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitutions and changes in the forms and details of the device illustrated and in its operation may be made by those skilled in the art with out departing from the spirit of the invention.

I claim:

1. An apparatus for collecting artificial thread in the form of a cake comprising a revolvable bucket having a bottom extending over the entire lower surface thereof, a deep hollow hub integrally secured to said bucket, a spindle axially positioned in and extending the length of said hub, said spindle being provided with passageways for the distribution of lubricants to the bearing parts of said centrifuge system, driving means entirely disposed in said hub for rotating said bucket and a closure for said hub.

2. An apparatus for collecting artificial thread in the form of a cake comprising a revolvable bucket having a bottom extending over the entire lower surface thereof, a deep hollow hub integrally secured to said bucket, a closure for said hub, a spindle axially positioned in and extending the length of said hub, an electric stator connected to said spindle, an external rotor dielectrically associated with said stator and mounted with respect to said hub so as to impart rotational movement thereto, and a bearing arrangement associated with said rotor, said stator, rotor and bearing arrangement being disposed entirely within said hub.

3. An apparatus 'for collecting artificial thread in the form of a cake comprising a revolvable bucket having a bottom extending over the entire lower surface thereof, a deep holow hub integrally secured to said bucket, a closure for said hub, and driving means 1f1or1)said bucket disposed entirely within said 4. An apparatus for collecting artificial thread in the formof a cake comprising a revolvable bucket having a bottom extending over the entire lower surface thereof, a deep hollow hub integrally secured to said bucket, a closure for said hub, a stationary spindle axially positioned in and extending the length of said hub and having a bearing engagement with said bucket, said spindle being provided with passageways for the distribution of lubricants to the bearing parts of said centrifuge system, and driving means entirely disposed within said hub to rotate said bucket, said driving means comprising an electric stator connected to said spindle and an external rotor dielectrically associated with said stator and mounted with respect to said hub so as to impart rotational movement thereto.

In testimony whereof, I have afiixed my signature to this specification.

PAUL E. HARRISON. 

